Articles having low wettability and methods for making

a technology of low wettability and low wettability, applied in the field of surface wettability, can solve the problems of high degree of “sheeting” of water over the solid surface, metallic components are particularly susceptible to icing, fouling, etc., and coatings, though effective, are often limited in practical application. , to achieve the effect of low liquid wettability
US20070031639A1Inactive Publication Date: 2007-02-08GENERAL ELECTRIC CO
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Patent Information

Authority / Receiving Office
US · United States
Current Assignee / Owner
GENERAL ELECTRIC CO
Publication Date
2007-02-08
Estimated Expiration
Not applicable · inactive patent

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Abstract

An article having low wettability is presented. The article comprises a body portion and a surface portion disposed on the body portion. The surface portion comprises a plurality of features disposed on the body portion, and the features have a size, shape, and orientation selected such that the surface portion has a wettability sufficient to generate, with a reference liquid, a contact angle of at least about 100 degrees. The features comprise a height dimension (h) and a width dimension (a), and are disposed in a spaced-apart relationship characterized by a spacing dimension (b). The ratio of b/a and the ratio of h/a are such that the drop exhibits metastable non-Wenzel behavior.
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Claims

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